What is the range of the coefficients of hydrodynamic resistances for the rounded edges at inlet?(a) 12-20 * 10^-3(b) 10-20 * 10^-3(c) 15-20 * 10^-3(d) 12-30 * 10^-3I got this question in final exam.Asked question is from Design of Fan in division Aspects of Design of Mechanical Parts of Design of Electrical Machines

What is the range of the coefficients of hydrodynamic resistances for

1.	What is the range of the coefficients of hydrodynamic resistances for the rounded edges at inlet?(a) 12-20 * 10^-3(b) 10-20 * 10^-3(c) 15-20 * 10^-3(d) 12-30 * 10^-3I got this question in final exam.Asked question is from Design of Fan in division Aspects of Design of Mechanical Parts of Design of Electrical Machines
Answer» RIGHT OPTION is (a) 12-20 * 10^-3 The explanation: The COEFFICIENTS of hydrodynamic resistances are used in the calculation of the TOTAL head. For ROUNDED edges the range is about 12-20 * 10^-3.

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